mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-06-20 21:03:40 +00:00
Code Activity

Improved handling of relational op of real values

Browse source
This commit is contained in:
Clifford Wolf 2014-06-17 12:47:51 +02:00
parent 88470283c9
commit 798ff88855
2 changed files with 17 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

17
frontends/ast/simplify.cc
View file

@ -1538,15 +1538,16 @@ skip_dynamic_range_lvalue_expansion:;
newNode = mkconst_bits(y.bits, false);
} else
if (children[0]->isConst() && children[1]->isConst()) {
bool cmp_signed = (children[0]->type == AST_REALVALUE || children[0]->is_signed) && (children[1]->type == AST_REALVALUE || children[1]->is_signed);
switch (type) {
case AST_LT: newNode = mkconst_int(children[0]->asReal(sign_hint) < children[1]->asReal(sign_hint), false, 1); break;
case AST_LE: newNode = mkconst_int(children[0]->asReal(sign_hint) <= children[1]->asReal(sign_hint), false, 1); break;
case AST_EQ: newNode = mkconst_int(children[0]->asReal(sign_hint) == children[1]->asReal(sign_hint), false, 1); break;
case AST_NE: newNode = mkconst_int(children[0]->asReal(sign_hint) != children[1]->asReal(sign_hint), false, 1); break;
case AST_EQX: newNode = mkconst_int(children[0]->asReal(sign_hint) == children[1]->asReal(sign_hint), false, 1); break;
case AST_NEX: newNode = mkconst_int(children[0]->asReal(sign_hint) != children[1]->asReal(sign_hint), false, 1); break;
case AST_GE: newNode = mkconst_int(children[0]->asReal(sign_hint) >= children[1]->asReal(sign_hint), false, 1); break;
case AST_GT: newNode = mkconst_int(children[0]->asReal(sign_hint) > children[1]->asReal(sign_hint), false, 1); break;
case AST_LT: newNode = mkconst_int(children[0]->asReal(cmp_signed) < children[1]->asReal(cmp_signed), false, 1); break;
case AST_LE: newNode = mkconst_int(children[0]->asReal(cmp_signed) <= children[1]->asReal(cmp_signed), false, 1); break;
case AST_EQ: newNode = mkconst_int(children[0]->asReal(cmp_signed) == children[1]->asReal(cmp_signed), false, 1); break;
case AST_NE: newNode = mkconst_int(children[0]->asReal(cmp_signed) != children[1]->asReal(cmp_signed), false, 1); break;
case AST_EQX: newNode = mkconst_int(children[0]->asReal(cmp_signed) == children[1]->asReal(cmp_signed), false, 1); break;
case AST_NEX: newNode = mkconst_int(children[0]->asReal(cmp_signed) != children[1]->asReal(cmp_signed), false, 1); break;
case AST_GE: newNode = mkconst_int(children[0]->asReal(cmp_signed) >= children[1]->asReal(cmp_signed), false, 1); break;
case AST_GT: newNode = mkconst_int(children[0]->asReal(cmp_signed) > children[1]->asReal(cmp_signed), false, 1); break;
default: log_abort();
}
}